Module kala.compress.compressors.pack200

Package kala.compress.harmony.pack200

Class NewAttributeBands

java.lang.Object

kala.compress.harmony.pack200.BandSet

kala.compress.harmony.pack200.NewAttributeBands

public class NewAttributeBands
extends BandSet

Sets of bands relating to a non-predefined attribute that has had a layout definition given to pack200 (e.g. via one of the -C, -M, -F or -D command line options)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	NewAttributeBands.AttributeLayoutElement	An AttributeLayoutElement is a part of an attribute layout and has one or more bands associated with it, which transmit the AttributeElement data for successive Attributes of this type.
class	NewAttributeBands.Call
class	NewAttributeBands.Callable
class	NewAttributeBands.Integral
class	NewAttributeBands.LayoutElement
class	NewAttributeBands.Reference	Constant Pool Reference
class	NewAttributeBands.Replication	A replication is an array of layout elements, with an associated count
class	NewAttributeBands.Union	A Union is a type of layout element where the tag value acts as a selector for one of the union cases
class	NewAttributeBands.UnionCase	A Union case

Nested classes/interfaces inherited from class kala.compress.harmony.pack200.BandSet

BandSet.BandAnalysisResults, BandSet.BandData

Field Summary

Fields

Modifier and Type	Field	Description
protected List<NewAttributeBands.AttributeLayoutElement>	attributeLayoutElements
private int[]	backwardsCallCounts
private final CpBands	cpBands
private final AttributeDefinitionBands.AttributeDefinition	def
private NewAttributeBands.Integral	lastPIntegral
private boolean	usedAtLeastOnce

Fields inherited from class kala.compress.harmony.pack200.BandSet

effort, segmentHeader

Constructor Summary

Constructors

Constructor	Description
NewAttributeBands(int effort, CpBands cpBands, SegmentHeader header, AttributeDefinitionBands.AttributeDefinition def)

Method Summary

Modifier and Type	Method	Description
void	addAttribute(NewAttribute attribute)
String	getAttributeName()
private BHSDCodec	getCodec(String layoutElement)	Returns the BHSDCodec that should be used for the given layout element
int	getFlagIndex()
private StringReader	getStreamUpToMatchingBracket(StringReader reader)	Utility method to get the contents of the given stream, up to the next ], (ignoring pairs of brackets [ and ])
boolean	isUsedAtLeastOnce()
int[]	numBackwardsCalls()
void	pack(OutputStream outputStream)	Write the packed set of bands to the given output stream
private void	parseLayout()
private List<NewAttributeBands.LayoutElement>	readBody(StringReader reader)	Read a 'body' section of the layout from the given stream
private int	readInteger(int i, InputStream inputStream)
private NewAttributeBands.AttributeLayoutElement	readNextAttributeElement(StringReader reader)
private NewAttributeBands.LayoutElement	readNextLayoutElement(StringReader reader)
private NewAttributeBands.UnionCase	readNextUnionCase(StringReader reader)	Read a UnionCase from the stream
private Integer	readNumber(StringReader stream)	Read a number from the stream and return it
private String	readUpToMatchingBracket(StringReader reader)	Utility method to get the contents of the given stream, up to the next ']', (ignoring pairs of brackets '[' and ']')
void	renumberBci(IntList bciRenumbering, Map<org.objectweb.asm.Label,Integer> labelsToOffsets)	Renumber any bytecode indexes or offsets as described in section 5.5.2 of the pack200 specification
private void	resolveCalls()	Resolve calls in the attribute layout and returns the number of backwards callables
private void	resolveCallsForElement(int i, NewAttributeBands.Callable currentCallable, NewAttributeBands.LayoutElement layoutElement)

Methods inherited from class kala.compress.harmony.pack200.BandSet

cpEntryListToArray, cpEntryOrNullListToArray, encodeBandInt, encodeFlags, encodeFlags, encodeScalar, encodeScalar, integerListToArray, longListToArray

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

attributeLayoutElements

protected List<NewAttributeBands.AttributeLayoutElement> attributeLayoutElements

backwardsCallCounts

private int[] backwardsCallCounts

cpBands

private final CpBands cpBands

def

private final AttributeDefinitionBands.AttributeDefinition def

usedAtLeastOnce

private boolean usedAtLeastOnce

lastPIntegral

private NewAttributeBands.Integral lastPIntegral

Constructor Details

NewAttributeBands

public NewAttributeBands(int effort,
 CpBands cpBands,
 SegmentHeader header,
 AttributeDefinitionBands.AttributeDefinition def)
                  throws IOException

Throws:

IOException

Method Details

addAttribute

public void addAttribute(NewAttribute attribute)

getAttributeName

public String getAttributeName()

getCodec

private BHSDCodec getCodec(String layoutElement)

Returns the BHSDCodec that should be used for the given layout element

Parameters:

layoutElement -

getFlagIndex

public int getFlagIndex()

getStreamUpToMatchingBracket

private StringReader getStreamUpToMatchingBracket(StringReader reader)
                                           throws IOException

Utility method to get the contents of the given stream, up to the next ], (ignoring pairs of brackets [ and ])

Parameters:

reader -

Returns:

Throws:

IOException - If an I/O error occurs.

isUsedAtLeastOnce

public boolean isUsedAtLeastOnce()

numBackwardsCalls

public int[] numBackwardsCalls()

pack

public void pack(OutputStream outputStream)
          throws IOException,
Pack200Exception

Description copied from class: BandSet

Write the packed set of bands to the given output stream

Specified by:

pack in class BandSet

Parameters:

outputStream - TODO

Throws:

IOException - If an I/O error occurs.

Pack200Exception - TODO

parseLayout

private void parseLayout()
                  throws IOException

Throws:

IOException

readBody

private List<NewAttributeBands.LayoutElement> readBody(StringReader reader)
                                                throws IOException

Read a 'body' section of the layout from the given stream

Parameters:

reader -

Returns:

List of LayoutElements

Throws:

IOException - If an I/O error occurs.

readInteger

private int readInteger(int i,
 InputStream inputStream)

readNextAttributeElement

private NewAttributeBands.AttributeLayoutElement readNextAttributeElement(StringReader reader)
                                                                   throws IOException

Throws:

IOException

readNextLayoutElement

private NewAttributeBands.LayoutElement readNextLayoutElement(StringReader reader)
                                                       throws IOException

Throws:

IOException

readNextUnionCase

private NewAttributeBands.UnionCase readNextUnionCase(StringReader reader)
                                               throws IOException

Read a UnionCase from the stream

Parameters:

reader -

Returns:

Throws:

IOException - If an I/O error occurs.

readNumber

private Integer readNumber(StringReader stream)
                    throws IOException

Read a number from the stream and return it

Parameters:

stream -

Returns:

Throws:

IOException - If an I/O error occurs.

readUpToMatchingBracket

private String readUpToMatchingBracket(StringReader reader)
                                throws IOException

Utility method to get the contents of the given stream, up to the next ']', (ignoring pairs of brackets '[' and ']')

Parameters:

reader -

Returns:

Throws:

IOException - If an I/O error occurs.

renumberBci

public void renumberBci(IntList bciRenumbering,
 Map<org.objectweb.asm.Label,Integer> labelsToOffsets)

Renumber any bytecode indexes or offsets as described in section 5.5.2 of the pack200 specification

Parameters:

bciRenumbering - TODO

labelsToOffsets - TODO

resolveCalls

private void resolveCalls()

Resolve calls in the attribute layout and returns the number of backwards callables

resolveCallsForElement

private void resolveCallsForElement(int i,
 NewAttributeBands.Callable currentCallable,
 NewAttributeBands.LayoutElement layoutElement)